One of the vexing problems of shelving design is depth. Most cases err on the side of very deep, 11-12 inch shelves, to accommodate art books as well as small paper backs. But sometimes the art books still hang over the edge, while the rest of the books end up looking lost on the shelf, either pushed way back, or pulled to the front with 8 inches of wasted space behind them. Francisco Gomez Paz has looked ingeniously at this problem with the Sarmiento, designed for Milanese innovators Danese. The design is very shallow (under 5 inches), with the shelves angled at 20 degrees, meaning that while almost every book will exceed the shelves' depth, the angle will keep them in place.